1994/1120/pc/devastar.c (diff list | history)

1994/1119/sys/src/9/pc/devastar.c:43,49 – 1994/1120/sys/src/9/pc/devastar.c:43,49 (short | long | prev | next)
1994/1106		ISA186ien= 1<<7, /* I186 irq enable bit state */ ISA186idata= 1<<6, /* I186 irq data bit state */
1994/1107		ISAmen= 1<<4, /* enable memory to respond to ISA cycles */ ISAmbank= 0, /* shift for 4 bit memory bank */
1994/1120		ISAmbank= 0xf<<0, /* shift for 4 bit memory bank */
1994/1107		ISAmaddr= 3, /* bits 14-19 of the boards mem address */
1994/1106		ISAstat1= 4, /* board status (1 bit per channel) */ ISAstat2= 5, /* board status (1 bit per channel) */
1994/1119/sys/src/9/pc/devastar.c:297,308 – 1994/1120/sys/src/9/pc/devastar.c:297,310
1994/1114		static void
1994/1113		setpage(Astar *a, ulong offset) { int i;
1994/1120		int i, c;
1994/1113		i = APAGE(offset); if(i == a->page) return; outb(a->port+ISActl2, ISAmen|i);
1994/1120		c = inb(a->port+ISActl2) & ~ISAmbank; outb(a->port+ISActl2, ISAmen|i|c);
1994/1113		a->page = i; }
1994/1119/sys/src/9/pc/devastar.c:394,399 – 1994/1120/sys/src/9/pc/devastar.c:396,402
1994/1118		continue;
1994/1106		}
1994/1120		/* check all possible names */
1994/1107		if(strcmp(a->type, "a100i") == 0 || strcmp(a->type,"A100I") == 0) a->ramsize = 16*1024; else if(strcmp(a->type, "a200i") == 0 || strcmp(a->type,"A200I") == 0)
1994/1119/sys/src/9/pc/devastar.c:404,409 – 1994/1120/sys/src/9/pc/devastar.c:407,413
1994/1107		continue;
1994/1118		}
1994/1108
1994/1120		/* defaults */
1994/1107		if(a->mem == 0)
1994/1108		a->mem = 0xD4000;
1994/1107		if(a->irq == 0)
1994/1119/sys/src/9/pc/devastar.c:415,435 – 1994/1120/sys/src/9/pc/devastar.c:419,427
1994/1109		astar[nastar] = 0;
1994/1107		continue; }
1994/1119		print("serial%d avanstar port 0x%lux addr %lux irq %d\n", i, a->port,
1994/1120		print("serial%d avanstar port 0x%lux addr %lux irq %d\n", a->id, a->port,
1994/1115		a->addr, a->irq);
1994/1109		nastar++;
1994/1114
1994/1119		/* disable ISA memory response */ c = inb(a->port+ISActl2); outb(a->port+ISActl2, c & ~ISAmen);                  /* download mode to turn off cpu */
1994/1118		c = inb(a->port+ISActl1); outb(a->port+ISActl1, c & ~ISAnotdl); a->memsize = Pramsize; a->page = -1;
1994/1119		setvec(Int0vec + a->irq, astarintr, a);
1994/1107		} }
1994/1119/sys/src/9/pc/devastar.c:453,459 – 1994/1120/sys/src/9/pc/devastar.c:445,451
1994/1109		static int
1994/1107		astarsetup(Astar *a) {
1994/1112		int i, found;
1994/1120		int i, c, found;
1994/1107		/* see if the card exists */ found = 0;
1994/1119/sys/src/9/pc/devastar.c:473,489 – 1994/1120/sys/src/9/pc/devastar.c:465,494
1994/1107		return -1; } /* set memory address */
1994/1113		outb(a->port+ISAmaddr, (a->mem>>12) & 0xfc);
1994/1115		a->gcb = (GCB*)(KZERO | a->mem); a->addr = (uchar*)(KZERO | a->mem);
1994/1107		/* set interrupt level */
1994/1120		/* check interrupt level */
1994/1112		if(isairqcode[a->irq] == -1){
1994/1107		print("Avanstar %d bad irq %d\n", a->id, a->irq); return -1; }
1994/1111
1994/1120		/* set ISA memory address */ outb(a->port+ISAmaddr, (a->mem>>12) & 0xfc); a->gcb = (GCB*)(KZERO | a->mem); a->addr = (uchar*)(KZERO | a->mem); /* set up interrupt level, reset processor, leave interrupts off */ c = inb(a->port+ISActl1); c &= ~(ISAnotdl|ISAien|ISAirq); c |= isairqcode[a->irq]; outb(a->port+ISActl1, c); setvec(Int0vec + a->irq, astarintr, a); /* disable ISA memory response */ c = inb(a->port+ISActl2); outb(a->port+ISActl2, c & ~ISAmen); a->memsize = 0; a->page = -1;
1994/1111		return 0; }
1994/1119/sys/src/9/pc/devastar.c:717,723 – 1994/1120/sys/src/9/pc/devastar.c:722,728
1994/1113		static void startcp(Astar *a) { int n, i, sz;
1994/1120		int c, n, i, sz;
1994/1113		uchar *x; CCB *ccb;
1994/1114		Astarchan *ac;
1994/1119/sys/src/9/pc/devastar.c:727,735 – 1994/1120/sys/src/9/pc/devastar.c:732,740
1994/1113		/* take board out of download mode and enable IRQ */
1994/1119		print("out of download\n");
1994/1113		outb(a->port+ISActl1, ISAien|isairqcode[a->irq]|ISAnotdl);
1994/1120		c = inb(a->port+ISActl1); outb(a->port+ISActl1, c|ISAien|ISAnotdl);
1994/1113		a->memsize = a->ramsize;
1994/1116		setpage(a, 0); if(a->memsize <= Pagesize) a->needpage = 0; else
1994/1119/sys/src/9/pc/devastar.c:827,832 – 1994/1120/sys/src/9/pc/devastar.c:832,838
1994/1116		a->needpage = 1;
1994/1113		/* enable ISA access to first 16k */
1994/1120		a->page = -1;
1994/1116		setpage(a, 0);
1994/1113
1994/1115		} else if(strncmp(cmsg, "sharedmem", 9) == 0){
1994/1119/sys/src/9/pc/devastar.c:836,842 – 1994/1120/sys/src/9/pc/devastar.c:842,849
1994/1115		a->memsize = a->ramsize; /* enable ISA access to first 16k */ outb(a->port+ISActl2, ISAmen);
1994/1120		a->page = -1; setpage(a, 0);
1994/1115
1994/1113		} else if(strncmp(cmsg, "run", 3) == 0){
1994/1115		/* start up downloaded program */